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          圓鋼

           

          圓鋼規格 ¢18-60mm,,材質包括20#,45#,55#,40CrUP,40CrUC,40Mn2,20CrMnTi,42CrMo

          優質碳素結構鋼Quality Carbon Structural Steels

          Grade Diameter(mm) Standard C Si Mn P S Ni Cu Cr
          20  
          ¢18-60 ¢50-130 ¢160-230
           
           
          GB/T
          0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.30 ≤0.25 ≤0.25
          45 0.42-0.50 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.30 ≤0.25 ≤0.25

          優質碳素結構圓管坯Quality Carbon Structural Steel Seamless Tube Blank
          Grade Diameter(mm) Standard C Si Mn P S Ni Cu Cr
          10  
          ¢50-130 ¢160-230
           
           
          GB/T
          0.07-0.13 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.30 ≤0.25 ≤0.15
          20 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.035 ≤0.035 ≤0.30 ≤0.25 ≤0.25
           
           合金結構鋼Alloy Structure Steel
          Grade Diameter(mm) Standard C Si Mn P S Ni Cu Cr Mo
          40Cr ¢18-60 GB/T 0.37-0.44 0.17-0.37 0.50-0.80 ≤0.035 ≤0.035 ≤0.30 ≤0.30 0.80-1.10 ≤0.15
           
          軸承鋼Bearing Steel
          Grade Diameter(mm) Standard C Si Mn P S Ni Cu Cr O Mo
          GCr15 ¢18-60 GB/T 0.95-1.05 0.15-0.35 0.25-0.45 ≤0.025 ≤0.025 ≤0.30 ≤0.30 1.40-1.65 12*10–6 ≤0.10
          GCr4 ¢18-60 GB/T 0.95-1.05 0.15-0.30 0.15-0.30 ≤0.025 ≤0.020 ≤0.25 ≤0.20 0.35-0.50 12*10–6 ≤0.08
          GCr15SiMn ¢18-60 GB/T 0.95-1.05 0.45-0.75 0.95-1.25 ≤0.025 ≤0.025 ≤0.30 ≤0.25 1.40-1.65 12*10–6 ≤0.10
           
           齒輪鋼Gear Steel
          Grade Diameter(mm) Standard C Si Mn P S Ni Cu Cr V Ti Mo
          20CrMnTi ¢18-60 GB/T 0.17-0.23 0.17-0.37 0.80-1.10 ≤0.035 ≤0.035 ≤0.30 ≤0.30 ≤1.00-1.30 0.04-0.10 ≤0.15

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